Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules (1908)
National correspondence school of railroading, Chicago. [from old catalog] · [Chicago] · leaf 292
orelation of the short distancebetween the union bar and the bar driven by the eccentricrod and radial link, and the lower end of the union bar,becomes the determining factor in moving the valve awayfrom the central position to the point desired. The action of the intervening union bar is such that… … 282 WALSCHAERTS VALVE GEAR. which the opening becomes a fixed quantity, unchangedby the variations of valve travel. Adding to this the factthat the intervening radial link oscillates in a much small-er arc than is the case with the Stephenson valve gear, itcan readily be seen that the regularity of…
Locomotives
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